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| author | Dale Johannesen <dalej@apple.com> | 2008-09-17 21:13:11 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2008-09-17 21:13:11 +0000 |
| commit | 91aac1015e6714d959801dd8d60f55a72827dc4d (patch) | |
| tree | c8440b8031a0fe3d7c63fcf9145ffc930759c547 /lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | |
| parent | 870e4bef419b1bd3e5ee05673975f1c05198b612 (diff) | |
| download | llvm-91aac1015e6714d959801dd8d60f55a72827dc4d.tar.gz llvm-91aac1015e6714d959801dd8d60f55a72827dc4d.tar.bz2 llvm-91aac1015e6714d959801dd8d60f55a72827dc4d.tar.xz | |
Add a bit to mark operands of asm's that conflict
with an earlyclobber operand elsewhere. Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way
that conflicts with an earlyclobber. See also comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56290 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 140bad27f5..c2938e35f8 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -1113,7 +1113,8 @@ SelectInlineAsmMemoryOperands(std::vector<SDValue> &Ops) { while (i != e) { unsigned Flags = cast<ConstantSDNode>(InOps[i])->getZExtValue(); - if ((Flags & 7) != 4 /*MEM*/) { + if ((Flags & 7) != 4 /*MEM*/ && + (Flags & 7) != 7 /*MEM OVERLAPS EARLYCLOBBER*/) { // Just skip over this operand, copying the operands verbatim. Ops.insert(Ops.end(), InOps.begin()+i, InOps.begin()+i+(Flags >> 3) + 1); i += (Flags >> 3) + 1; @@ -1128,7 +1129,7 @@ SelectInlineAsmMemoryOperands(std::vector<SDValue> &Ops) { // Add this to the output node. MVT IntPtrTy = CurDAG->getTargetLoweringInfo().getPointerTy(); - Ops.push_back(CurDAG->getTargetConstant(4/*MEM*/ | (SelOps.size() << 3), + Ops.push_back(CurDAG->getTargetConstant((Flags & 7) | (SelOps.size()<< 3), IntPtrTy)); Ops.insert(Ops.end(), SelOps.begin(), SelOps.end()); i += 2; |